As the eternal regent of Equestria, Princess Celestia's knowledge of magic is without equal. Over her long life, only a few gifted ponies who had a great destiny before them have had the honor of learning at her side. Sunset Shimmer was one such pony: one of Celestia’s best and most promising students. As she learned at Celestia’s hooves, their bond strengthened until they became far more than student and teacher to one another.

Sometimes those closest to us are the ones who can hurt us the most.

[Note: This story does not directly tie into Equestria Girls]

Every Friday, from five in the afternoon to eleven at night, Pinkie Pie does volunteer work. She doesn't have to do it, the world won't stop if she doesn't, but she chooses to do it anyway. Even if it's doing seemingly insignificant little things.

It is a matter of life and death, after all. Literally.

Sunset Shimmer, has finally decided to return to Equestria to right all the wrongs that she has done on both sides of the crystal mirror. She is even ready to face whatever punishment Celestia sees fit, no matter how great it is.

Imagine her surprise when she is forgiven AND given another chance to be Celestia's student again.

As she makes amends and hoofs out apologies, she will also make some friends with both old and new faces, including Celestia's adopted son, Lockon Astros.

And little does she realize that, fate has plans for her once again. But this time, she will earn more than just the redemption that she seeks.

(Credit for the cover art goes to SunsetMajka626 who has both a DeviantArt and a Derpibooru account.)